Doctors Bergstrom and Carson get far more than they bargained for when their attempt to track down a drug courier from Mexico, who has a highly contagious form of plague, leads them into the middle of a drug war.

An innocent woman is slain by a bullet from the gun of Officer Joe Gilland, who was chasing illegal alien Wing Kom Po: Wing's pregnant wife. My Lin, enters the country unaware that she is carrying a cache of narcotics for her husband, who is slain in a doublecross, leaving her and her baby at the mercy of his wicked cousin, Hoanh An; when Hoanh An tries to sell her baby, My Lin kills the evil woman.